.container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-color: #f0f2f5;
  padding: 12px;


  .header {
    background-color: #fff;
    margin-bottom: 24px;
    padding: 12px;
  }

  .content {
    flex: auto;
    display: flex;
  
    .left {
      width: 285px;
      background-color: #fff;
      padding: 12px;
    } 
  
    .right {
      width: 300px;
      background-color: #fff;
      padding: 12px;
    }
  
    .main {
      flex: 1;
      position: relative;
      overflow: hidden;
  
      .canvas {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        overflow-y: auto;
        width: 400px;
        height: 700px;
        background-color: #fff;
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
      }
    }
  }
}


